← Linger
Privacy Policy
Last updated: 2026-06-05
Linger is designed so that your data never leaves your Mac. This policy explains exactly what it does and does not do.
The short version
- Linger processes camera frames entirely on your Mac to detect whether you are present.
- No images are ever stored. Frames are analyzed in memory and immediately discarded.
- The only thing saved is a numeric faceprint (a mathematical embedding, not a photo), stored locally on your Mac.
- Nothing is transmitted. Linger does not connect to the internet, has no servers, and requests no network access.
- No account, no tracking, no analytics, no advertising, no third parties.
What Linger accesses
- Camera: to check, on-device, whether the enrolled user is in front of the Mac. You'll be asked to grant camera permission the first time. The macOS green camera indicator blinks during each check; this is enforced by macOS.
What Linger stores (locally only)
- A single face embedding (a list of numbers derived from your enrollment photos) and a match threshold, saved in the app's container on your Mac. This is used to recognize you. It is not a photo and cannot be turned back into one.
- Your app preferences (idle time, recheck interval, strictness, launch-at-login).
These never leave your device and are not shared with anyone.
What Linger does NOT do
- It does not save, upload, or transmit any image or video.
- It does not collect personal information or usage analytics.
- It does not use third-party SDKs, trackers, or advertising identifiers.
- It does not require or request an internet connection.
Your control
- Remove your face data at any time from the app (Settings → "Remove my face data"), which deletes the stored faceprint.
- Uninstalling Linger removes all of its locally stored data.
Children
Linger is not directed at children and collects no data from anyone.
Changes
If this policy changes, the updated version will be posted here with a new date.
Contact
Questions about privacy: juls@yakki.ai